windows

We own a 1929 brick tutor home. A dormer was opened up into a room. They added a window with a wood frame. It has leaded glass as do the rest of the windows in our home. But, we'd like to replace it with a window that still fits the style of our home and has a more modern locking feature as a child will be using the room. The old window has a gap in the center where the two panels meet. What are my options for windows?